Accuracy International Barrel - What Do I Have?

[kft101]

I have these couple of Lothar Walther made Accuracy International barrels. The top one is for an AW. Anyone know what the bottom barrel is for? It obviously has differences in the tenon from the AW barrel. And can it be made to work on an AW? Thanks in advance.

 

[Bacarrat]

AE MK I barrel probably.

 

[Kiba]

Bottom barrel is for an AE, Mk1 through Mk3. They had separate recoil lugs and the factory barrels, especially the UK made barrels, had an unthreaded portion of the tenon like in your pictures where the recoil lug is.

AINA/Tooley AE Mk3 barrels were typically fully threaded to to the shoulder and could be used on AE/AW/AT/AX.

 

[Potatosalad]

The AE barrel (bottom) will not thread into an AW receiver. Conversely, the AW barrel (top) will work in an AE.